/*    stepdiff.c*/int     LEFT_MOTOR=     0;int     RIGHT_MOTOR=    3;int     DIFF_EYE=       0;void main(){    while (1) {        if (analog(DIFF_EYE) < 128) {            /* turn to left  */            motor(RIGHT_MOTOR, 100); sleep(0.1); off(RIGHT_MOTOR);        } else {            /* turn to right */            motor(LEFT_MOTOR, 100); sleep(0.1); off(LEFT_MOTOR);        }    }}